Recently, Tsuna has been acting strange behind Hikaru's back. One day he puts on a nice suits, which he never does, and surprises both Hikaru and Sadamitsu. Hikaru is suspicious while Sadamitsu no doubt believes that there must be a woman. Hikaru decides to tail Tsuna, but when she notices his unusually serious behavior, she takes a firm decision about something.
ヒカルに内緒で、不審な行動をとり続ける綱。
珍しくもスーツ姿で外出した綱を怪しむヒカルに、「女だな」そう断言する貞光。貞光に言われるままに綱の跡をつけ、綱の必死な様子を垣間見たヒカルはある決意を固めるのだった。
